Cheap Spirometer for home use to control lung functions like. The instrument shows the standard FEV1, FEVC and graphs of volume output for checking these values at home. It is rather accurate but NO certified medical device!

Electronics needed for this project:

-TTGO T-Display ESP32 CP2104 WiFi bluetooth Module 1.14 Inch LCD Development

-SDP816-125PA Pressure Sensor, CMOSens®, 125 Pa, Analogue, Differential

-Lipo Battery -- 650mah

-On-Off Power Toggle Switch

For detailed description, wiring and arduino code see this instructables:

[https://www.instructables.com/3D-Printed-Spirometer/](https://www.instructables.com/3D-Printed-Spirometer/)